Upper & Lower Coolant Hose Kit (Green)

Features:

• Fits 2011–2016 6.6L Duramax LML engines
• Includes upper and lower coolant hoses
• Direct bolt-on replacement with no cutting
• TIG welded 304 stainless steel T fittings
• Replaces failure-prone plastic hose junctions
• 5 mm thick silicone for extreme durability
• 4-ply heat-resistant internal fiber reinforcement
• Billet aluminum quick-connect LML fitting
• Withstands high pressure and high temperatures
• Stainless steel clamps for a leak-free seal
• Bright green finish adds a custom look
• Ideal for stock or modified Duramax setups

Say Goodbye To Cracked Coolant Lines For Good

If you’re running a 2011–2016 Duramax, you probably know the factory coolant hoses and plastic T fittings don’t hold up well over time. Cracking, leaking, and premature wear are common issues that can leave you stuck on the side of the road. The PPE Upper and Lower Coolant Hose Kit is a smart upgrade that not only solves these problems but does it with style and strength. Made from durable 5 mm thick silicone and reinforced with four layers of heat-resistant fibers, this kit can take the heat and pressure of even the most demanding builds. Whether you're keeping your truck stock or pushing big power, these hoses are built to last. The TIG welded stainless steel T fittings eliminate weak points and look great under the hood, while the green finish adds a custom touch. This kit installs with no cutting or guesswork, giving you factory fitment with far better reliability.

Built Tough Where Factory Hoses Always Fail

The PPE 119023300 Coolant Hose Kit is engineered to address one of the most overlooked failure points in the Duramax cooling system, the factory molded and plastic T fittings. These stock parts are prone to fatigue and cracking, especially under high engine temperatures and pressure cycles. PPE replaces those weak spots with TIG welded 304 stainless steel T fittings that eliminate leaks and last far longer than plastic alternatives. The hoses themselves are constructed from thick 5 mm silicone with four internal plies of high-temp fiber reinforcement to resist ballooning and breakdown over time. This kit includes both upper and lower coolant hoses, along with a billet aluminum quick-connect fitting for the LML, ensuring a clean and reliable connection. Stainless steel clamps are included to maintain consistent pressure and eliminate coolant loss. With direct bolt-on installation and no need for cutting or modifications, this kit offers a perfect fit and upgraded performance in one package. It's a serious cooling system solution for any 6.6L Duramax owner who demands durability and long-term peace of mind.

Fitment: 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• Designed for 2011–2016 GM 6.6L Duramax LML engines
• Replaces factory hoses prone to cracking and leaks
• Includes both upper and lower coolant hoses
• Direct bolt-on install with no cutting required
• Ideal for stock or high-performance applications
• Green color adds a custom under-hood appearance
• T fittings are TIG welded 304 stainless steel
• Quick-connect end uses billet aluminum and stainless steel
• Silicone hose thickness is double that of factory
• Comes complete with high-quality stainless steel clamps